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5.8 days

MEDICAL: Peripheral Vascular Disorder with CC 110

9.1 days

SURGICAL: Major Cardiovascular Procedures with CC

abdominal aortic aneurysm (AAA) is a localized outpouching or dilation of the arterial wall in the latter portion of the descending segment of the aorta. Aneurysms of the abdominal aorta occur more frequently than those of the thoracic aorta. AAAs are the most common type of arterial aneurysms, occurring in 3% to 10% of people older than 50 years of age in the United States. AAA may be fusiform (spindle-shaped) or saccular (pouchlike) in shape. A fusiform aneurysm in which the dilated area encircles the entire aorta is most common. A saccular aneurysm has a dilated area on only one side of the vessel.

The outpouching of the wall of the aorta occurs when the musculoelastic middle layer or media of the artery becomes weak (often caused by plaque and cholesterol deposits) and degenerative changes occur. The inner and outer layers of the arterial wall are stretched, and as the pulsatile force of the blood rushes through the aorta, the vessel wall becomes increasingly weak, and the aneurysm enlarges. Abdominal aneurysms can be fatal. More than half of people with untreated aneurysms die of aneurysm rupture within 2 years.

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